Abstract:
:In this study we have investigated whether electron acceptors, such as nitrate or sulphate ions, competitively inhibit the reduction of perchlorate in brine in continuous up-flow packed bed bioreactors. The effect of pH and hydraulic retention time (HRT) on the reduction of perchlorate at high salinity has also been examined. Reduction of perchlorate was found to be only moderately influenced by nitrate (under 163 mg N L-'), implying that there was no significant microbial competition for electron acceptors. As a result of microbial diversity, there were few differences between microbial communities fed with a variety of media, suggesting that most nitrate-reducing bacteria are able to reduce perchlorate at high salinity. Reduction of perchlorate was almost complete at relatively high sulfate levels (1000 mg L(-1)), neutral pH (6-8) and relatively long HRTs (> 10 h).
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Chung J,Shin S,Oh Jdoi
10.1080/09593331003621557subject
Has Abstractpub_date
2010-05-01 00:00:00pages
693-704issue
6eissn
0959-3330issn
1479-487Xjournal_volume
31pub_type
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